Google has so far released two security patches for Android devices that cover a total of 74 vulnerabilities in the system software, 11 of which are considered quite critical. Specifically, the December security patch included two versions that affected both the company itself and Android devices as a whole.
The so-called 12.01.2016 security patch includes five different fixes for high and medium severity vulnerabilities. There are also two remote security patches with CVE-2016-5419, CVE-2016-5420, CVE-2016-5421, and CVE-2016-6768.
The Android 7.0 software was observed to not be at risk of any vulnerability, so no upgrade , unlike Android versions 4.4 through 6.0.1 , which require the installation of security code.
The new 2016-12-05 security patch comes with even more fixes. Specifically, it includes 58 new updates, of which 11 are critical, 33 are high risk, and 14 are moderate. Once again, it is considered necessary to install the new updates on Android versions 4.4.4 and later.
It is worth noting that the updates CVE-2016-4794 and CVE-2016-5195 are for the Dirty COW bug discovered in Linux and affecting a number of Android devices. Google rates the bug as critical and advises that the following devices install the updates: Pixel C, Pixel, Pixel XL, Nexus 5X, and Nexus 6P.
Canonical has already patched potential vulnerabilities that appeared in Ubuntu versions, and after the release of Google's new security codes, no device should be left vulnerable to bugs. So if you have devices running Android software, make sure to install the new security codes as soon as possible.

